var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

// 导入
const session = require("express-session");
const FileStore = require('session-file-store')(session);

// 创建 session 中间件
const sessionMiddleware = session({
  store: new FileStore(),
  secret: 'fdsfdsf fdssdf',
  cookie: { maxAge: 60000 }
});

var server = require("http").Server(app);
var io = require('socket.io')(server);
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(sessionMiddleware);

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});



server.listen(3000, function() {
  console.log('listening on *:3000');
  
});
// 用户连接时触发
io.on('connection', function (socket) { 
  console.log('a user connected');
});
// module.exports = app;
